Home / 13,420.20-20,133.48-13,197.06

Finding the Fourth Proportional to 13,420.20, 20,133.48 and 13,197.06

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Solution

The fourth proportional to 13,420.20, 20,133.48 and 13,197.06 is: 19,798.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.20 : 20,133.48 = 13,197.06 : x
  2. Step 2: Convert to fraction form
    13,420.20/20,133.48 = 13,197.06/x
  3. Step 3: Cross multiply
    13,420.20x = 20,133.48 × 13,197.06
  4. Step 4: Simplify right side
    13,420.20x = 265,702,743.57
  5. Step 5: Solve for x
    x = 265,702,743.57/13,420.20
  6. Step 6: Final answer
    x = 19,798.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.